大数据量地球物理测井绘图关键技术研究  

The key technology research of geophysical well logging plot with mass data

作　　者：李河[1] 王祝文[1] 李舟波[1] 王朝辉[1] 

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026

出　　处：《地球物理学进展》2005年第1期71-77,共7页Progress in Geophysics

基　　金：国家自然科学基金"九五"重大项目;大庆石油管理局项目( 49894190-42)联合资助.

摘　　要：在开发地球物理测井解释软件过程中,绘图所涉及的数据量很大,在绘图过程中要进行大量的比例运算、坐标转换及坐标映射等,特别是绘制巨幅、需要连续滚屏显示的声电成像测井图像,数据量和运算量更大,因此,就会经常出现内存不足、图形刷新速度过慢、图形重叠和闪烁等现象.在开发测井解释系统GeoWell过程中,采用内存映射文件、内存DC绘图、局部重绘等技术实现了大数据量巨幅测井图形的快速度、高质量绘制以及图形的连续滚动显示,提高了绘图效率,为微机环境下开发大数据量复杂测井绘图软件提供了技术参考.In the process of developing the software of geophysical well logging interpretation, a great volume of data is involved in plotting. And in the course of plotting, much scale computing, coordinate transformation and coordinate mapping is to be underway. Particularly when plotting huge acoustic imaging logging and electric imaging logging image which demands continuous scrolling display, there are much more volumes of data and computing work. Therefore, it frequently turns out to be some phenomena, such as memory insufficiency, speed decreasing of plot refresh, plot overlap and screen flicker etc. While developing GeoWell of the well logging interpretation system, by using technology of memory mapping file, memory DC plotting and part redrawing, the huge well logging image with mass data can be drawn fleetly in high quality, and the plot can be scrolled continuously. It also improves plotting efficiency and offers technical reference for developing the software of complicated well logging plot with mass data in the PC environment.

关 键 词：测井软件 内存映射文件 内存DC绘图 局部重绘 连续滚动显示 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论] P631[自动化与计算机技术—计算机科学与技术]